Alaska earthquakes

M3.0 earthquake 122 km SSW of Atka, Alaska

A magnitude 3.0 earthquake struck 122 km SSW of Atka, Alaska on Fri, Jul 18, 2025, 1:38 AM HADT (10:38 UTC), 15 km (9 mi) below the surface.

A larger quake followed: M4.7 107 km S of Atka, Alaska. This one was a foreshock.

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Where this earthquake was located, with the others nearby. Select one for its page.

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The earthquake

Magnitude
3.0 (ML, local (Richter)), minor
Magnitude from
USGS National Earthquake Information Center
Local time
UTC
2025-07-18 10:38:34 UTC
Depth
14.9 km (9.2 mi), shallow
Epicenter
51.230° N, 175.055° W
Region
Alaska
Tsunami flag
No
Status
Reviewed by a seismologist

Magnitude estimates

Different scales measure different things and differ by a few tenths. The USGS marks one as preferred, and it is the one this page uses.

Mag.ScaleComputed byNotes
3.0ML, local (Richter)USGS National Earthquake Information CenterPreferred · Reviewed · ±0.115 · 10 stations
2.5ML, local (Richter)Alaska Earthquake CenterPreliminary

Did you feel it?

No one has reported feeling this quake to the USGS.

How well it is located

Reviewed by a seismologist.

Location uncertainty
About 7.1 km horizontally, 14.0 km in depth
Magnitude uncertainty
±0.12
Depth from
From location
Station coverage gap
250°, poorly surrounded by stations
Stations used
21

Nearby

Within 100 km, magnitude 1.5 and up: 144 in the 60 days after this one and 85 in the 30 days before it.

After

  1. 2.1120 km SSW of Atka, Alaska · 442 days ago · 14 km deep · 2 km away
  2. 2.043 km SSW of Atka, Alaska · 441 days ago · 50 km deep · 79 km away
  3. 3.086 km ESE of Adak, Alaska · 441 days ago · 35 km deep · 45 km away
  4. 2.080 km SW of Atka, Alaska · 440 days ago · 22 km deep · 51 km away
  5. 2.845 km SE of Adak, Alaska · 440 days ago · 48 km deep · 88 km away
  6. 1.659 km SSE of Adak, Alaska · 439 days ago · 24 km deep · 81 km away
  7. 1.640 km SSE of Adak, Alaska · 439 days ago · 37 km deep · 97 km away
  8. 1.7118 km SSW of Atka, Alaska · 438 days ago · 22 km deep · 5 km away
  9. 3.3127 km SSW of Atka, Alaska · 438 days ago · 35 km deep · 5 km away
  10. 2.9121 km SSW of Atka, Alaska · 438 days ago · 10 km deep · 1 km away
  11. 1.670 km SW of Atka, Alaska · 437 days ago · 51 km deep · 63 km away
  12. 2.763 km WSW of Atka, Alaska · 437 days ago · 88 km deep · 92 km away
  13. 3.394 km SW of Atka, Alaska · 436 days ago · 35 km deep · 41 km away
  14. 1.894 km SW of Atka, Alaska · 436 days ago · 26 km deep · 40 km away
  15. 1.997 km SW of Atka, Alaska · 436 days ago · 26 km deep · 38 km away
  16. 2.174 km SE of Adak, Alaska · 436 days ago · 22 km deep · 57 km away
  17. 2.574 km SSE of Adak, Alaska · 435 days ago · 35 km deep · 85 km away
  18. 2.0130 km S of Atka, Alaska · 435 days ago · 15 km deep · 67 km away
  19. 1.9143 km SSE of Atka, Alaska · 434 days ago · 7 km deep · 97 km away
  20. 4.273 km SSE of Atka, Alaska · 433 days ago · 40 km deep · 94 km away
  21. 1.969 km SSE of Adak, Alaska · 433 days ago · 25 km deep · 91 km away
  22. 1.968 km SSE of Adak, Alaska · 433 days ago · 20 km deep · 92 km away
  23. 2.567 km SSE of Adak, Alaska · 433 days ago · 35 km deep · 92 km away
  24. 1.8136 km S of Atka, Alaska · 432 days ago · 11 km deep · 88 km away
  25. 1.8185 km SSE of Adak, Alaska · 432 days ago · 8 km deep · 82 km away
  26. 1.764 km SSE of Adak, Alaska · 432 days ago · 33 km deep · 77 km away
  27. 1.8152 km SE of Adak, Alaska · 431 days ago · 26 km deep · 51 km away
  28. 1.5115 km SSW of Atka, Alaska · 431 days ago · 26 km deep · 13 km away
  29. 2.565 km SSE of Adak, Alaska · 430 days ago · 35 km deep · 97 km away
  30. 1.884 km SW of Atka, Alaska · 430 days ago · 26 km deep · 46 km away
  31. 1.968 km SSE of Adak, Alaska · 429 days ago · 21 km deep · 90 km away
  32. 1.656 km SSE of Adak, Alaska · 429 days ago · 24 km deep · 82 km away
  33. 2.9161 km SSW of Atka, Alaska · 429 days ago · 10 km deep · 45 km away
  34. 2.672 km ESE of Adak, Alaska · 428 days ago · 35 km deep · 59 km away
  35. 3.293 km SSE of Adak, Alaska · 427 days ago · 10 km deep · 86 km away
  36. 3.375 km SSE of Adak, Alaska · 427 days ago · 35 km deep · 88 km away
  37. 2.145 km SW of Atka, Alaska · 427 days ago · 45 km deep · 77 km away
  38. 1.963 km SE of Adak, Alaska · 426 days ago · 24 km deep · 68 km away
  39. 2.658 km ESE of Adak, Alaska · 426 days ago · 44 km deep · 73 km away
  40. 2.795 km SSW of Atka, Alaska · 426 days ago · 35 km deep · 28 km away
  41. 2.4142 km S of Atka, Alaska · 426 days ago · 15 km deep · 83 km away
  42. 2.994 km SSE of Atka, Alaska · 425 days ago · 35 km deep · 82 km away
  43. 1.9124 km SE of Adak, Alaska · 425 days ago · 1 km deep · 46 km away
  44. 2.550 km SE of Adak, Alaska · 425 days ago · 35 km deep · 82 km away
  45. 2.0100 km SE of Adak, Alaska · 425 days ago · 9 km deep · 33 km away
  46. 2.093 km SE of Adak, Alaska · 424 days ago · 25 km deep · 40 km away
  47. 1.691 km ESE of Adak, Alaska · 424 days ago · 26 km deep · 41 km away
  48. 2.1126 km S of Atka, Alaska · 424 days ago · 20 km deep · 80 km away
  49. 2.569 km SSE of Adak, Alaska · 424 days ago · 34 km deep · 90 km away
  50. 1.961 km SE of Adak, Alaska · 424 days ago · 26 km deep · 77 km away
  51. 1.8100 km SSE of Adak, Alaska · 424 days ago · 5 km deep · 77 km away
  52. 1.788 km S of Atka, Alaska · 424 days ago · 20 km deep · 54 km away
  53. 1.854 km SSE of Adak, Alaska · 423 days ago · 26 km deep · 86 km away
  54. 1.962 km SE of Adak, Alaska · 422 days ago · 26 km deep · 70 km away
  55. 2.690 km SSE of Adak, Alaska · 422 days ago · 10 km deep · 72 km away
  56. 2.793 km SW of Atka, Alaska · 422 days ago · 35 km deep · 44 km away
  57. 2.167 km SSE of Atka, Alaska · 422 days ago · 19 km deep · 91 km away
  58. 1.961 km SE of Adak, Alaska · 422 days ago · 23 km deep · 77 km away
  59. 3.155 km SSE of Adak, Alaska · 421 days ago · 35 km deep · 96 km away
  60. 1.740 km SSE of Adak, Alaska · 420 days ago · 31 km deep · 98 km away

The first 60 of 144.

Before

  1. 2.9124 km SSW of Atka, Alaska · 442 days ago · 18 km deep · 4 km away
  2. 3.0119 km SSW of Atka, Alaska · 442 days ago · 22 km deep · 4 km away
  3. 2.570 km SSE of Adak, Alaska · 442 days ago · 35 km deep · 83 km away
  4. 2.295 km ESE of Adak, Alaska · 444 days ago · 26 km deep · 47 km away
  5. 3.099 km SW of Atka, Alaska · 444 days ago · 34 km deep · 43 km away
  6. 3.364 km SSE of Adak, Alaska · 445 days ago · 35 km deep · 84 km away
  7. 2.770 km SE of Adak, Alaska · 445 days ago · 19 km deep · 68 km away
  8. 1.9104 km SSW of Atka, Alaska · 446 days ago · 21 km deep · 25 km away
  9. 1.9121 km SSW of Atka, Alaska · 447 days ago · 13 km deep · 7 km away
  10. 2.5103 km SSE of Adak, Alaska · 447 days ago · 10 km deep · 72 km away
  11. 1.7101 km SSE of Adak, Alaska · 447 days ago · 13 km deep · 75 km away
  12. 1.876 km SW of Atka, Alaska · 447 days ago · 24 km deep · 49 km away
  13. 1.889 km SE of Adak, Alaska · 447 days ago · 11 km deep · 42 km away
  14. 1.641 km SSE of Adak, Alaska · 447 days ago · 33 km deep · 96 km away
  15. 1.758 km SSE of Adak, Alaska · 447 days ago · 18 km deep · 99 km away
  16. 2.8194 km SSE of Adak, Alaska · 448 days ago · 10 km deep · 95 km away
  17. 2.6126 km S of Atka, Alaska · 448 days ago · 10 km deep · 76 km away
  18. 1.658 km SE of Adak, Alaska · 448 days ago · 25 km deep · 72 km away
  19. 1.966 km SSE of Atka, Alaska · 448 days ago · 1 km deep · 90 km away
  20. 1.989 km SSE of Adak, Alaska · 449 days ago · 13 km deep · 81 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event us6000qzan (also filed as ak02595a4mcq). Read Sat, Oct 3, 2026, 5:16 PM UTC.